Serena has not lost a set so far this tournament. Venus has only lost one, and that was against the rapidly improving American Coco Vandeweghe in the semi. If Serena wins the final in straight sets, it'll be her sixth grand slam win without dropping a single set.

The last time the sisters met was in the 2015 U.S. Open quarter finals. Serena won. Their last meeting in a Grand Slam final was 2009 Wimbledon. Serena again.